US20020131174A1 - Diffraction surfaces and methods for the manufacture thereof - Google Patents

Diffraction surfaces and methods for the manufacture thereof Download PDF

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Publication number
US20020131174A1
US20020131174A1 US09/884,458 US88445801A US2002131174A1 US 20020131174 A1 US20020131174 A1 US 20020131174A1 US 88445801 A US88445801 A US 88445801A US 2002131174 A1 US2002131174 A1 US 2002131174A1
Authority
US
United States
Prior art keywords
image
grating
area portions
data
portions
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US09/884,458
Other languages
English (en)
Inventor
Peter Leigh-Jones
Brian Alexander
Peter Atherton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mikoh Technology Ltd
Original Assignee
Mikoh Technology Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AUPM4155A external-priority patent/AUPM415594A0/en
Priority claimed from AUPM6411A external-priority patent/AUPM641194A0/en
Priority claimed from AUPM6631A external-priority patent/AUPM663194A0/en
Priority claimed from AUPM7942A external-priority patent/AUPM794294A0/en
Priority claimed from AUPM8376A external-priority patent/AUPM837694A0/en
Application filed by Mikoh Technology Ltd filed Critical Mikoh Technology Ltd
Priority to US09/884,458 priority Critical patent/US20020131174A1/en
Publication of US20020131174A1 publication Critical patent/US20020131174A1/en
Abandoned legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1847—Manufacturing methods
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1842—Gratings for image generation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/08—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
    • G06K19/10—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards
    • G06K19/16—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being a hologram or diffraction grating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/0005—Adaptation of holography to specific applications
    • G03H1/0011—Adaptation of holography to specific applications for security or authentication
US09/884,458 1994-02-28 2001-06-19 Diffraction surfaces and methods for the manufacture thereof Abandoned US20020131174A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US09/884,458 US20020131174A1 (en) 1994-02-28 2001-06-19 Diffraction surfaces and methods for the manufacture thereof

Applications Claiming Priority (14)

Application Number Priority Date Filing Date Title
AUPM4155A AUPM415594A0 (en) 1994-02-28 1994-02-28 A method of producing a diffraction grating
AUPM4155 1994-02-28
AUPM6411 1994-06-22
AUPM6411A AUPM641194A0 (en) 1994-06-22 1994-06-22 A method of producing a diffraction grating
AUPM6631 1994-07-05
AUPM6631A AUPM663194A0 (en) 1994-07-05 1994-07-05 Optical surface designs
AUPM7942A AUPM794294A0 (en) 1994-09-05 1994-09-05 Optical surfaces
AUPM7942 1994-09-05
AUPM8376 1994-09-26
AUPM8376A AUPM837694A0 (en) 1994-09-26 1994-09-26 A method of producing a diffraction grating II
AUPCT/AU95/00099 1995-02-28
PCT/AU1995/000099 WO1995023350A1 (en) 1994-02-28 1995-02-28 Difraction surfaces and methods for the manufacture thereof
US70054196A 1996-08-27 1996-08-27
US09/884,458 US20020131174A1 (en) 1994-02-28 2001-06-19 Diffraction surfaces and methods for the manufacture thereof

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US70054196A Continuation 1994-02-28 1996-08-27

Publications (1)

Publication Number Publication Date
US20020131174A1 true US20020131174A1 (en) 2002-09-19

Family

ID=27507443

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/884,458 Abandoned US20020131174A1 (en) 1994-02-28 2001-06-19 Diffraction surfaces and methods for the manufacture thereof

Country Status (6)

Country Link
US (1) US20020131174A1 (ja)
EP (1) EP0748459A4 (ja)
JP (1) JPH09509264A (ja)
CN (1) CN1142267A (ja)
CA (1) CA2183979A1 (ja)
WO (1) WO1995023350A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060095773A1 (en) * 2002-10-03 2006-05-04 Hideo Itoh Authentication system, light emitting device, authentication device and authentication method
US20070098394A1 (en) * 2005-10-28 2007-05-03 Baggs Scott C Image capture device output settings module

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1174611A (zh) * 1994-09-05 1998-02-25 米高技术有限公司 衍射表面及其制造方法
JP4730527B2 (ja) * 2005-07-04 2011-07-20 大日本印刷株式会社 ホログラム観察具
FR2893595B1 (fr) * 2005-11-23 2010-08-27 Novatec Sa Soc Scelle de haute securite inviolable et reutilisable
FR2967089B1 (fr) * 2010-11-10 2021-05-21 Oberthur Technologies Composant de securite optiquement variable pour un document-valeur
KR20140031909A (ko) * 2011-04-28 2014-03-13 바스프 에스이 태양광 관리용 ir 반사체
EP2965134A1 (en) 2013-03-05 2016-01-13 Rambus Inc. Phase gratings with odd symmetry for high-resoultion lensless optical sensing
JP2018165733A (ja) * 2017-03-28 2018-10-25 独立行政法人 国立印刷局 ホログラム及び偽造防止媒体

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4155627A (en) * 1976-02-02 1979-05-22 Rca Corporation Color diffractive subtractive filter master recording comprising a plurality of superposed two-level relief patterns on the surface of a substrate
JPS60184231A (ja) * 1984-03-01 1985-09-19 Minolta Camera Co Ltd バイレベル位相格子型焦点板
GB2177975B (en) * 1985-02-07 1989-11-08 Bradbury Wilkinson Embossed articles
US5145212A (en) * 1988-02-12 1992-09-08 American Banknote Holographics, Inc. Non-continuous holograms, methods of making them and articles incorporating them
JP2508387B2 (ja) * 1989-10-16 1996-06-19 凸版印刷株式会社 回折格子パタ―ンを有するディスプレイの作製方法
US5291317A (en) * 1990-07-12 1994-03-01 Applied Holographics Corporation Holographic diffraction grating patterns and methods for creating the same
GB9019784D0 (en) * 1990-09-10 1990-10-24 Amblehurst Ltd Security device
JPH0546062A (ja) * 1991-08-12 1993-02-26 Matsushita Electric Ind Co Ltd 計算機ホログラムの作成方法および光学的情報処理装置
JPH05224579A (ja) * 1991-11-08 1993-09-03 Shoei Insatsu Kk 正当性認識方法およびそれに使用するシールおよび認識装置
EP0644508B1 (en) * 1993-08-31 1999-12-22 Control Module, Inc. Secure optical identification method and means

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060095773A1 (en) * 2002-10-03 2006-05-04 Hideo Itoh Authentication system, light emitting device, authentication device and authentication method
US20070098394A1 (en) * 2005-10-28 2007-05-03 Baggs Scott C Image capture device output settings module
US8619313B2 (en) * 2005-10-28 2013-12-31 Hewlett-Packard Development Company, L.P. Scanning device with plural image capture zones on a platen

Also Published As

Publication number Publication date
EP0748459A1 (en) 1996-12-18
JPH09509264A (ja) 1997-09-16
EP0748459A4 (en) 1998-08-19
CN1142267A (zh) 1997-02-05
CA2183979A1 (en) 1995-08-31
WO1995023350A1 (en) 1995-08-31

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Legal Events

Date Code Title Description
STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION